Male Fern #1052776

Ferns grew already in the Carboniferous, about 400 million years ago. At that time, they grew still tree high. Therefore, they are usually referred as tree ferns. Together with club mosses and horsetail , they formed huge forests. Ferns are not flowering. They do not reproduce by seeds but by spores. They sit in groups, called sori, at the underside of the leafs. The Sori of the male fern look a little bit like tiny worms.